The 1947 - Present Chevrolet & GMC Truck Message Board Network

Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain


Thread Tools Display Modes
Old 09-25-2017, 03:29 PM   #1
Registered User
Join Date: Jul 2016
Location: Santa Rosa California
Posts: 52
Turbo sb chevy c10

Hey guys! I have got a question about a turbo SB chevy. Heres the deal. Im a teenager who has a 70 C10 LWB and I dont think a turbo fits its personality very well but its got 3.08s in the rear and its really slow. I want to put a junkyard turbo on it, say maybe off of a 7.3 ford. It is a Ramjet 350. It has a aluminum EFI manifold with vortec heads and it makes 351 hp and 403tq.

Any advice? Thanks.
Smokintire70 is offline   Reply With Quote
Old 09-25-2017, 05:11 PM   #2
6>8 Plugless........

Dieselwrencher's Avatar
Join Date: Sep 2007
Location: Prairie City, Ia
Posts: 15,185
Re: Turbo sb chevy c10

I can't give you much advise, but here is a thread that another member has a turbo charged SBC in a square body. He has been driving it for a few years. I see PB robbed his pics too, but you can read through it or hit him up for info and questions I'm sure.
1972 Chevy Longhorn K30 Cheyenne Super, 359 Inline 6 cylinder, Auto Trans, Tilt, Diesel Tach/Vach, Buckets, Rare Rear 4-link and air ride option Build Thread
1976 K30 CC SWB Build Thread

Tired of spark plugs? Check this out.
Dieselwrencher is offline   Reply With Quote
Old 09-25-2017, 11:10 PM   #3
60-66 Nut

Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 21,618
Re: Turbo sb chevy c10

A rear gear change would likely be cheaper than everything to add a turbo and will give you better acceleration.
Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
Captainfab is offline   Reply With Quote
Old 09-25-2017, 11:23 PM   #4
Registered User
IRQVET's Avatar
Join Date: Aug 2017
Location: Southern Oregon
Posts: 106
Re: Turbo sb chevy c10

Wow, OP is from the same town I grew up. Small world, rofl.
1998 Chevy Tahoe 2D
1968 Chevy C20
1967 Kaiser Willys Jeep- Aka "Seņor Money Pit."
IRQVET is offline   Reply With Quote
Old 09-26-2017, 02:32 AM   #5
Registered User
Join Date: Jun 2016
Location: Phoenix, AZ
Posts: 429
Re: Turbo sb chevy c10

Ramjet as in the EFI crate motor? Those are no slouch and should move that truck around pretty well. There is so good aftermarket support for the ECU that can wake that engine up even more. As for turbos, there is a whole science behind those. You don't just go pull one out of a junkyard and slap it on and go. Put on a turbo that isn't right for your engine and you can really turn it into a dog. IIRC, the Ramjet is a 10:1 CR which will limit the boost you can run.

I second the advice from CaptainFab - go with a gear change. Maybe loosen up to the converter a little if it is an automatic.
87 R30 CC Dually, TBI 454, TH400, zero rust barn find
87 Jeep Grand Wagoneer, 6.5 turbodiesel, 700R4
DieselSJ is offline   Reply With Quote
Old 09-26-2017, 12:08 PM   #6
Registered User
mattfranklin's Avatar
Join Date: Dec 2011
Location: Moraga, CA
Posts: 502
Re: Turbo sb chevy c10

I'm a huge fan of Engine Masters the web show from Motor Trend Online. They did a junkyard swap onto another V-8. And tested it on the dyno.

Here are my key takeaways from their project:
1) get the turbo solidly installed (proper clamps, brackets, exhaust manifolds and so on)
2) get the right fuel system (special carb or EFI system)
3) make sure you open up the ring gaps.
4) Don't forget #3
5) have fun
(Very) Slow-Going Build Thread: Stock 1970 Short Step with Stock 1970 LT-1
mattfranklin is offline   Reply With Quote
Old 09-26-2017, 03:30 PM   #7
Senior Member
truckster's Avatar
Join Date: Jan 2001
Location: Orem, Utah
Posts: 4,335
Re: Turbo sb chevy c10

With that kind of HP/torque you should get moving pretty easily even with 3.08 gears. What transmission are you running, and is it possible you have the wrong torque converter?
If I didn't build it or fix it, it's probably not mine.
truckster is offline   Reply With Quote
Old 09-26-2017, 09:57 PM   #8
Registered User
Join Date: May 2016
Location: Henderson NC
Posts: 551
Re: Turbo sb chevy c10

I have a stock vortec 350, a Holley 4 barrel, headers, and 307 gears. Everyone including me seem to be impressed on how well it runs. Maybe you have some tuning problems.
garyd1961 is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -4. The time now is 01:08 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013